Data/hora: 22/06/2024 04:48:51

Biblioteca(s): | Embrapa Meio Ambiente.
Data corrente: | 22/12/2014
Data da última atualização: | 22/12/2014
Autoria: | GALVAO, J. A. H.; BETTIOL, W.
Afiliação: | JOSE ABRAHAO HADDAD GALVAO, CNPMA; WAGNER BETTIOL, CNPMA.
Título: | Effects of UV-B radiation on Lecanicillium spp., biological control agents of the coffee leaf rust pathogen.
Ano de publicação: | 2014
Fonte/Imprenta: | Tropical Plant Pathology, Brasília, DF, v. 39, n. 5, p. 392-400, 2014.
Idioma: | Inglês
Conteúdo: | Coffee leaf rust is the main disease of coffee and its causal agent is naturally hyperparasited by Lecanicillium lecanii, indicating its potential for biocontrol. Ultraviolet-B (UV-B) radiation is an important factor that interferes on application of biocontrol agents, and Lecanicillium can be affected by UV-B. The objective of this work was to evaluate the effects of UV-B on Lecanicillium isolates and on its capacity to colonize rust lesions. There were variations among Lecanicillium strains in sensitivity to UV-B radiation, causing inactivation and delayed spore germination. The most tolerant strain (CCMA-1143) had LD50=1.63 kJ/m2 of UV-B. The incidence and colonization of Lecanicillium on coffee leaf rust lesions were influenced by the dose of UV-B radiation, and were increased when the isolate CCMA-1143 was sprayed on rust lesions. The effects of UV-B should be considered on efficacy studies for the development of biopesticides.
Palavras-Chave: | Coffee; UV-B.
Thesagro: | Café; Controle biológico; Ferrugem; Hemileia vastatrix.
Thesaurus Nal: | Biological control; Biopesticides; Climate change; Leaf rust; Lecanicillium; Ultraviolet radiation.
Categoria do assunto: | H Saúde e Patologia
URL: | http://ainfo.cnptia.embrapa.br/digital/bitstream/item/114188/1/2014AP029.pdf
Registro original: | Embrapa Meio Ambiente (CNPMA)
Exemplares: | CNPMA - (13286-1) - UPC - AP - DD -  -  -  - DIS